fmf: Work around missing /etc/nsswitch.conf in Fedora Rawhide

Upgrading glibc in Rawhide now (semi-intentionally) removes
/etc/nsswitch.conf, but does not enforce installing a new enough
pam/authselect to ensure that it gets re-added. This breaks resolving
"localhost".

Reported as https://bugzilla.redhat.com/show_bug.cgi?id=2033020

test/browser/browser.sh

@@ -12,6 +12,9 @@ LOGS="$(pwd)/logs"
 mkdir -p "$LOGS"
 chmod a+w "$LOGS"
 
+# HACK: https://bugzilla.redhat.com/show_bug.cgi?id=2033020
+dnf update -y pam || true
+
 # install firefox (available everywhere in Fedora and RHEL)
 # we don't need the H.264 codec, and it is sometimes not available (rhbz#2005760)
 dnf install --disablerepo=fedora-cisco-openh264 -y firefox